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API Platform Software Engineer at Horizon3

Horizon3

Horizon3 seeks a US-remote engineer to build NodeZero API services and gateway capabilities in Go, including routing, authentication and rate limiting.

Software Engineer, Security Integrations at Horizon3

Horizon3

Horizon3 seeks a US-remote engineer to connect NodeZero pentest results with customers’ security tools, including EDR, SIEM, SOAR and ITSM platforms.

Senior IT Systems Engineer at Horizon3

Horizon3

Secure and operate Horizon3 identity, email and network systems for its distributed workforce. Harden authentication and messaging, manage routing and firewall policies, and document reliable operations. The posting lists remote work in the United States.

Senior Agentic Systems Software Engineer at Horizon3

Horizon3

Build the reasoning and orchestration layer for an autonomous web application penetration tester. Use LLM-driven agents and deterministic checks to probe, verify and report vulnerabilities without false positives or unsafe actions. The posting lists remote work in the United States.

Senior Backend Security Controls Engineer at Horizon3

Horizon3

Build NodeZero capabilities that compare attack techniques with endpoint detection telemetry, showing what EDR tools caught and what they missed. Develop scalable backend evidence and effectiveness insights across customer environments. The posting lists remote work in the United States.

Staff OCI Attack Engineer at Horizon3

Horizon3

Build Oracle Cloud Infrastructure attack coverage for Horizon3 NodeZero, translating cloud misconfigurations and exploitable paths into safe, repeatable autonomous tests. This posting lists remote work in the United States.

Federal Platform Engineer at Horizon3

Horizon3

Deploy and operate Horizon3 product infrastructure across federal AWS environments, including regulated workloads. Build secure cloud-native platforms with Kubernetes, Terraform, Ansible and GitLab CI. The posting lists remote work in the United States.